<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
    <div>5</div>
    <div>6</div>
    <div>7</div>
    <div>8</div>
    <div>9</div>
    <div>10</div>
    <script>
        const divs = document.querySelectorAll("div");

        console.log(divs);


        const iterator = divs[Symbol.iterator]()
        let result = iterator.next();
        while (!result.done) {
            console.log(result);
            const item = result.value; //取出数据
            console.log(item);
            result = iterator.next();
        }

        for (const item of divs) {
            console.log(item);
        }

    </script>
</body>

</html>